Android isn’t new anymore. Most applications are not greenfield projects. Many of us find ourselves in the position of working with code we did not author and which we don’t fully understand.

In the spirit of Michael Feathers' classic book, Working Effectively with Legacy Code, this talk explores the ways we can navigate, maintain, and evolve a legacy codebase. We will cover topics like testing, refactoring, architecture, and dependency breaking techniques with examples based on the speaker’s own experience over the past 9+ years as an Android engineer.